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A corkscrew-shaped object is floating in a tub of water. When water is poured into the tub from some height, the object starts rising up vertically in the stream of water. The water stream is falling down in a spiral fashion. What is the Physics behind this? Is it the turning effect on the object caused by the spiral motion of the water falling on it? Or is it some other phenomenon?

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    $\begingroup$ Piece of fishing monofilament attached to the bucket. $\endgroup$ – zeta-band Aug 16 '18 at 15:46
  • $\begingroup$ Tamil James Randi; find the video and focus on the top of the stick pulling the rest, at a roughly constant distance from the point where the water triangle switches to a roughly tubular stream; the point is uplifting like the top of the stick. $\endgroup$ – Cosmas Zachos Aug 16 '18 at 21:16
  • $\begingroup$ apologies...I didn't quite understand. I watched the video number of times. are you suggesting there is a stick pulling the object. Is there a filament attached to the object, causing us to believe the object is rising ? $\endgroup$ – schhugani Aug 17 '18 at 17:03
  • $\begingroup$ I'm affirming the above filament assertion, detailing the behavior of the object. It is sleight of hand with no interesting physics aspects. $\endgroup$ – Cosmas Zachos Aug 17 '18 at 17:24

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